| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Othman, Hosam
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Topics
Publications (3/3 displayed)
- 2023Structural, spectroscopic, and radiation shielding properties of Pb<sup>2+</sup>‐doped borate and phosphate glassescitations
- 2020Spectroscopic study of the role of alkaline earth oxides in mixed borate glasses - site basicity, polarizability and glass structurecitations
- 2019Europium-Doped Tellurite Glasses: The Eu2+ Emission in Tellurite, Adjusting Eu2+ and Eu3+ Emissions toward White Light Emissioncitations
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article
Spectroscopic study of the role of alkaline earth oxides in mixed borate glasses - site basicity, polarizability and glass structure
Abstract
International audience ; The effect of alkaline earth ions on the structure and properties of borate glasses near the metaborate composition was studied for two glass series, 30MO-10Li 2 O-10Al 2 O 3 -50B 2 O 3 with M=Mg, Ca, Sr or Ba and xMgO-(30-x)BaO-10Li 2 O-10Al 2 O 3 -50B 2 O 3 series, for undoped and doped (0.5 mol% MnO or CuO) glasses. Thermal and optical properties, including the optical basicity, were correlated with structural variations. IR and Raman spectra showed the highest N 4 fraction for the high basicity glasses, decreasing for higher field strength ions (Ba>Sr>Ca>Mg). As determined from far IR bands the mixing of dissimilar cations affects M-O interactions. The glass transition temperature T g correlates well to the average bond strength of the compared alkaline earth ions. The redox ratio of Mn 2+ /Mn 3+ or Cu 2+ /Cu + shifted to lower valences in low basicity glasses. The optical basicity probe ion Mn 2+ gives consistently higher values compared to the average optical basicity, suggesting that Mn 2+ ions seek out high basicity ligands.